[PATCH] powerpc/imc-pmu: Revert nest_init_lock to being a mutex

[Michael Ellerman]

On Mon, 30 Jan 2023 12:44:01 +1100, Michael Ellerman wrote:
> The recent commit 76d588dddc45 ("powerpc/imc-pmu: Fix use of mutex in
> IRQs disabled section") fixed warnings (and possible deadlocks) in the
> IMC PMU driver by converting the locking to use spinlocks.
> 
> It also converted the init-time nest_init_lock to a spinlock, even
> though it's not used at runtime in IRQ disabled sections or while
> holding other spinlocks.
> 
> [...]

Applied to powerpc/fixes.

[1/1] powerpc/imc-pmu: Revert nest_init_lock to being a mutex
      https://git.kernel.org/powerpc/c/ad53db4acb415976761d7302f5b02e97f2bd097e

cheers